This assignment asks you to write bash shell scripts to compute matrix operations.

matrix dims [MATRIX] 

• dims should print the dimensions of the matrix as the number of rows, followed by a space, then the number of columns

Here is a brief example of what the output should look like.

$ cat m1 1 2 3 4 5 6 7 8 $ cat m2 1 2 3 4 5 6 7 8 $ ./matrix dims m1 2 4 $ cat m2 | ./matrix dims 4 2

matrix dims [MATRIX]

• Prints error message to stderr, nothing to stdout and return value != 0 if:
  • Argument count is greater than 1 (e.g. `matrix dims m1 m2`).
  • Argument count is 1 but the file named by argument 1 is not readable (e.g. `matrix dims no_such_file`).
• Otherwise, prints "ROWS COLS" (Space separated!) to stdout, nothing to stderr, and returns 0.